import java.io.IOException;  
import java.util.*;  
  
import org.apache.hadoop.conf.*;  
import org.apache.hadoop.fs.Path;  
import org.apache.hadoop.io.*;  
import org.apache.hadoop.mapreduce.*;  
import org.apache.hadoop.mapreduce.lib.input.*;  
import org.apache.hadoop.mapreduce.lib.output.*;  
import org.apache.hadoop.util.*;  
  
public class Test extends Configured implements Tool{  
    public static class Map extends Mapper<LongWritable, Text, Text, IntWritable> {  
//        private final static IntWritable one = new IntWritable(1);  
//        private Text word = new Text();  
        public void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {  
//            String line = value.toString();  
//            StringTokenizer tokenizer = new StringTokenizer(line," \t\n\r\f,.:?![]'`;");  
//            while (tokenizer.hasMoreTokens()) {  
//                word.set(tokenizer.nextToken());  
//               context.write(word, one);  
//            }  
        }  
     }  
  
    public static class Reduce extends Reducer<Text, IntWritable, Text, IntWritable> {  
         public void reduce(Text key, Iterable<IntWritable> values, Context context) throws IOException, InterruptedException {  
//             int sum = 0;  
//             while (values.iterator().hasNext()) {  
//                 sum += values.iterator().next().get();  
//             }  
//             context.write(key, new IntWritable(sum));  
         }  
    }  
      
    public int run(String[] args) throws Exception {  
        Configuration conf=getConf();  
          
        Job  job= new Job(conf,"WordCount");  
        job.setJarByClass(Test.class);  
          
        FileInputFormat.setInputPaths(job, new Path(args[0]));  
        FileOutputFormat.setOutputPath(job, new Path(args[1]));  
          
        job.setJobName("WordCount");  
        job.setMapperClass(Map.class);  
        job.setCombinerClass(Reduce.class);  
        job.setReducerClass(Reduce.class);  
          
         job.setInputFormatClass(TextInputFormat.class);  
         job.setOutputFormatClass(TextOutputFormat.class);  
         job.setOutputKeyClass(Text.class);  
         job.setOutputValueClass(IntWritable.class);  
        System.exit(job.waitForCompletion(true)?0:1) ;  
         return 1;  
    }  
      
    public static void main(String[] args) throws Exception {  
        int res =ToolRunner.run(new Configuration(), new Test(), args);  
        System.exit(res);  
    }  
}  
